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Of or pertaining to pneumonitis.

Inflammation of the lungs; pneumonia.

Manganese dioxide, occurring in tetragonal crystals nearly as hard as quartz.

A stone marked with dendrites and black lines, and so disposed as to represent rivers, marshes, etc.

A semivitrified clay or shale, somewhat resembling jasper; -- called also porcelain jasper.

The principle of succession in royal families, especially among the Eastern Roman emperors, by which a younger son, if born after the accession of his father to the throne, was preferred to an elder son who was not so born. Sir T. Palgrave.

e condition of being born after another in the same family; - - distinguished from primogeniture. [R.] Sir T. Browne.

The right of the youngest born. Mozley & W.

This previously known, or which should be known in order to understand something else.

See Premunitory.

Previous warning or admonition; forewarning.

Previous cognition. Fotherby.

Infinite previous duration. [R.] "The world's preëternity." Cudworth.

Prearranged. [Obs.] " Set and prefinite time." Holland.

Previous limitation. [Obs.] Fotherby.

A pale green mineral occurring in crystalline aggregates having a botryoidal or mammillary structure, and rarely in distinct crystals. It is a hydrous silicate of alumina and lime.

alled from the resemblance of the wartlike crystals to the mammillæ on the surface of prehnite.

Ignition in an internal-combustion engine while the inlet valve is open or before compression is completed.

Previous warning, notice, or information; forewarning; as, a premonition of danger.

One who, or that which, gives premonition.